Adjustable hand cultivator



Dec. '21 1926. 1

1 H. R. RODEWALD ADJUSTABLE HAND CULTIVA'I'OR Filed Au gu st 20, 1925 ZSheets-Sheet 1 Dec. 21 1926.

H. R. RODEWALD ADJUSTAB LE HAND CULTIYATOR Filed August 20, 1925. 2 Shee ts-Sheet 2 I \\\\\\\Hu a. n m I n n v. n u I 1 I p 1 v I fall all M n m H gwuanlfoc l /ar'ola lzlbo ewalJ V Patented Dec. 21,1926.

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c Ap ncaa'n filediAugust 192R Serial No.'5'1,45$.

This invention relates to cultivatorsdd signed to be operated by' h'and and l1av1ng V re-curved teeth'to scaril'yj the soil,

'The general' object, of the invention is to provide a hand cultivator of this ,c-l1aracter' in wlnchthe teeth are ad ustable toward or" from each other to thereby increase-or de-" crease the space betweenthe teeth. l

- A further object ist'oiprovide device'of this character having in connection with the teeth projecting shieldsada'pted to be disposed on each side of a row of pl'antsto thereby protect the plants from the action of "the teeth and also prevent dirt being Figure 2 is a section on the line 2-2 of:

Figure 3; v

Figure 3 is a side elevation thereof, the

plate 11 and allied parts being in section;

Figure 4 is a section on the line 1-4 of Figure 3;

Figure 5 1s a perspective view of one of the shields. r J v Referring to these drawings, 10 designates the handle of the cultivator which, of course, may be of any desired length, and preferably applied to the upper 'face of this handle and extending rearward beyond. the rear end of the handle is an iron 11 or other metallic stripformed with holes 12. This iron 111 may be held to the handle in any suitable manner and at its rear end is connected by a bolt 13 to a transverse bar 14, this bar beh ing connected by forwardly convergentbraces15 to the tongueor handle .10; The

transverse-bar 1.4 is provided on each side of the bolt 13 with a plurality of apertures 16, and adapted to be disposed through any one of these apertures are the pivot bolts '17,

' V Pivotally connected to eachpivot bolt area plurality of Qre-c'urved cultivator blades 18, threebeing shown. These bladesiare disposed preferably in a convergent relation so that the tips of the blades are out of alignment with each other and held in this relation in any suitable manner, as by the bolt 17. The'bolt 17 also passes through the shank 19 ota shield 20 which is somewhat rectangular 111 form and whose-lower edge is adapted to travelvupon or'sli'ghtly beneath the ground. Thisshield'is adapted to move with the three or more blades "18 as. these are. shifted outward. or inward by the mechanism now to be described." Q: I

Resting upon the upper face of: the handle- 10 and movable longitudinally thereon .is? an adjusting member-521 whose "forward end provided with :a downwardly-l extending tooth or detent 22 adaptedfto engage insan-y one :ofthe holes :12. he rear'end oflthis adjusting member 21 isj piv-o'tally connect ed at 23 to two outwardly diverging links. 724, eachlink'being pivoted at its-;o uter-;end,

as at 25,- to: the uppermost blade 18; It will "be obviousinow that if theiadjustingimen ber. 21Qbe shifted rearward, the blades will be'oscillated upon their;pivot bolts 17 and the rearends of the bladeslwillbe caused to shift away from each other, or if the adjusting member be shifted'in the other direction the blades will be shifted toward each. other, thus increasingor decreasing the distance between the blades so that "the blades will be either parallel to each other .or spread apart. Furthermore, it will be obvious that the forward ends of these blades may be shifted toward or from each other 1 v by adjusting the pivot bolt 17. in any of the I apertures 16 andthusthedistance between 1 the forward ends 01 the blades maybe adjusted;

The links '24: are likewise provided with a plurality of perforations 26 and the pivot bolt 25 may be adjusted between any one of these perforations to thereby change the relation of the rearends of the blades and adjust the rear ends of the blades to suit the adjustment of the forward ends of the f 2 blades. r V The adjusting. member '21 is held in its adjusted position by the pin '01- tooth 22 engaging in any one o t the apertures 12" and this adjusting member is held from ac-' cidental upward movement which would V disengage the pin 22 from the'aperture by vmeans of'a spring-pressed plunger 27 which vis mounted in the top of a housing 28, this fplunger having vertical move'mentand being urged downward bvmeans'l'ot aspring 29. This plunger may be held in its verti cal position by an arcuate member 30 hav ingan 'aperturethrough which the upper end of the plunger passes. Thisplunger I has a rounded head at its lower end which bears against the upper face of the adjusting member 21 and urges this adjusting member downrp 7 WVhen it is desired to adjust the cultivator teeth, the adjusting member 21 is lifted todetach the pinfrom its engagement with the aperture 12 and the, adjusting member is V g V described a pair' of cultivating members thenv shifted forward or rearward, thus spreading apart the blades and shields or drawing them together. It is obvious that anyvnumberof blades might be disposed in a gang of blades aiidthat the blades maybe adjusted toward or trom'fea ch other either at their forward ends or rear ends. f It is; also obvious that the number of blades "might'be' readily changed and the shieldseither 'removed 'or usedt asf desired. 7

7 While I'have' described. a torin ofmy in-j vention which I, believe to-be particularly effective, I do not Wish to be limited thereto as it is obvious that many'chang'es might be made therein Without departing from the spirit of the invention I claim w 1. A handcultivator ofthe character described includingahandle having'a cross bar at'its rear end, a pair of cultivator gangs pivotally mounted upon said cross bar for movement in a'horizontal plane, a

pair of shields, one-"forfeach gang, each shield being pivotally I mounted upon the pivotal support for the corresponding gang, and manually operable'means carried by the handle whereby the gangs andshields may be spread apart from each other at their rear ends orshiftedtowardreach other.

2. In, a cultivating device of the character pivotally supported at their torward ends, -40 means for adjusting the rear ends ofthe" cultivating members 1 toward or from each other including a longitudinally inovable adjusting member mounted upon the handle, V a pair oilinks pivotally connected to the '45 rear end of said member and to said cultivating members, means forholding the adjusting] member inposition includinga pin on the adjusting member; the handle being provided with sockets tor thereceptionor 510- said'pin a housing carried on the handle and through whichthe ad usting member passes, and a spring operated plunger disposed in said housing and bearing atits upper end against the upper face'of the ad- I j usting member. a I 7 V I Intestnnony WhereofI :hereunto aflix my signature. a r r a HAROLE'RAYMOND aonEwALa. 

